JP2019008435A - Trend graph display device - Google Patents

Abstract

To provide a user interface that enables an operator to intuitively understand a trend graph and event information in association with each other.SOLUTION: A trend graph display device comprises: a storing unit 102 that stores measurement data; a storing unit 103 that stores event information related to the measurement data; a display data creation unit 104 that creates display data of a trend graph in which transition of the measurement data is visualized for each of the types of the measurement data; an event determination unit 105 that determines whether or not alarm information is present in the event information corresponding to the measurement data displayed in the trend graph; a display form determination unit 106 that, when the alarm information is determined to be present, sets the display data such that the trend graph in a period during which an alarm is generated is displayed in a form indicating the generation of the alarm, on the basis of alarm information; and a display unit 107 that displays the trend graph according to the display data.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a trend graph display device that displays a trend graph that visualizes the transition of measurement data.

2. Description of the Related Art Conventionally, a trend graph display device that graphs and displays measurement data collected at predetermined time intervals such as pressure, liquid amount, and temperature has been widely used (see Patent Document 1).
On the other hand, during collection of measurement data, when the measurement data value satisfies a condition for determining that something is abnormal, it is common to present the alert information to the operator and store the alert information in the storage device (See Patent Document 2).

  Conventionally, the trend graph and event information (alert information) are recorded and managed as completely separate information, and the trend graph display screen and the event information display screen are usually prepared separately. There is a problem that it is difficult to compare and refer to both event information and event information.

JP 2012-133432 A JP 2017-76164 A

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a trend graph display device that can provide an intuitively understandable user interface by associating a trend graph with event information. To do.

  The trend graph display device of the present invention includes a first storage unit configured to store measurement data, a second storage unit configured to store event information related to the measurement data, With reference to event information stored in the second storage unit, a display data creation unit configured to create display data of a trend graph that visualizes the transition of measurement data for each type of measurement data, An event determination unit configured to determine whether alarm information exists in event information corresponding to measurement data displayed on the trend graph, and an alarm when the alarm information is determined to exist Based on the information, the display data is set so that the trend graph of the alarm occurrence period is in a display format indicating the occurrence of the alarm A display format determination unit which, is characterized in that a display unit configured to perform display of the trend graph setting of the display format corresponding to the display data subjected.

Moreover, in one configuration example of the trend graph display device of the present invention, the display format indicating the occurrence of the alarm is a format in which the trend graph line in the alarm generation period is blinked.
Further, in one configuration example of the trend graph display device of the present invention, the display format indicating the alarm occurrence is a display color of the trend graph line in the alarm occurrence period, and the trend graph in the period in which no alarm is generated. This is a display format in which the color is different from the display color of the line.
Further, in one configuration example of the trend graph display device of the present invention, the display format determination unit determines a display format indicating the occurrence of the alarm according to the importance of the alarm that has occurred. .
Also, in one configuration example of the trend graph display device of the present invention, when an alarm information display is requested by an operator, alarm information corresponding to the measurement data displayed on the trend graph is displayed on the trend graph display screen. And an alarm information output unit configured to change the display data so as to be displayed.
Further, in one configuration example of the trend graph display device of the present invention, when an operator requests to display event information, event information corresponding to the measurement data displayed in the trend graph is displayed on the trend graph display screen. And an event information output unit configured to change the display data so as to be displayed on the screen.

  According to the present invention, when it is determined that alarm information exists in the event information corresponding to the measurement data displayed in the trend graph, the trend graph of the alarm occurrence period is in a display format indicating the occurrence of the alarm. Therefore, the operator can intuitively understand the trend graph and the alarm information in association with each other.

  In the present invention, when the alarm information display is requested by the operator, the alarm information corresponding to the measurement data displayed in the trend graph is displayed on the trend graph display screen. Details can be confirmed.

  In the present invention, when the display of the event information is requested by the operator, the event information corresponding to the measurement data displayed on the trend graph is displayed on the display screen of the trend graph. The details of the event to be performed can be confirmed.

FIG. 1 is a block diagram illustrating a configuration of a control system according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating the configuration of the server computer and the trend graph display device of the control system according to the embodiment of the present invention. FIG. 3 is a flowchart for explaining the operation of the server computer of the control system according to the embodiment of the present invention. FIG. 4 is a flowchart for explaining the operation of the trend graph display device of the control system according to the embodiment of the present invention. FIG. 5 is a diagram showing an example of the trend graph display in the embodiment of the present invention. FIG. 6 is a diagram showing an example of the trend graph display after the alarm information display request operation is performed in the embodiment of the present invention. FIG. 7 is a diagram showing an example of the trend graph display after the event information display request operation is performed in the embodiment of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a control system to which a trend graph display device according to an embodiment of the present invention is applied. The control system controls process variables such as flow rate and pressure based on the measurement data obtained by the flow meter 1, the pressure meter 2, the flow meter 1 and the pressure gauge 2, and also controls the measurement data and event information. The control device 3 to be transmitted to the system network 4, the control system gateway (GW) 5 to send the measurement data and event information transmitted from the control device 3 to the host system network 6, and the control by the control device 3 is monitored or controlled. A control man-machine device 7 for giving an instruction to the device 3, a server computer 8 for collecting measurement data and event information transmitted from the control device 3, a trend graph display of the measurement data, and an event information display The trend graph display device 10 is configured to perform.

  Since the present invention is intended for displaying collected measurement data and event information, it can be applied regardless of the type of control method or process variable. Therefore, in FIG. 1, only typical sensors such as the flow meter 1 and the pressure gauge 2 are described, and description of valves, heaters, and the like controlled by the control device 3 is omitted.

  FIG. 2 is a block diagram showing the configuration of the server computer 8 and the trend graph display device 10. The server computer 8 includes a collection unit 80 that collects measurement data and event information, a storage unit 81 that stores collected measurement data, a storage unit 82 (event database) that stores collected event information, a trend, A search unit 83 that searches for measurement data requested from the graph display device 10 and event information corresponding to the measurement data, and a transmission unit 84 that transmits the searched measurement data and event information to the trend graph display device 10. The

  The trend graph display device 10 includes an operation receiving unit 100 that receives operations from an operator, a data request unit 101 that requests measurement data from the server computer 8, and a storage unit 102 that stores measurement data acquired from the server computer 8. A storage unit 103 that stores event information sent from the server computer 8 together with the measurement data, and a display data creation unit 104 that creates display data of a trend graph that visualizes the transition of the measurement data for each type of measurement data. The event determination unit 105 that determines whether alarm information exists in the event information corresponding to the measurement data displayed on the trend graph, and a trend graph of the alarm occurrence period when it is determined that the alarm information exists Display data in a display format that indicates the occurrence of an alarm Alarm information corresponding to the measurement data displayed on the trend graph is displayed when the display format determination unit 106 to be set, the display unit 107 including a display device such as a liquid crystal panel, and the display of alarm information are requested by the operator. The alarm information output unit 108 that changes display data to be displayed on the trend graph display screen, and event information corresponding to the measurement data displayed on the trend graph when the display of event information is requested by the operator Is configured with an event information output unit 109 that changes the display data so that is displayed on the display screen of the trend graph.

  FIG. 3 is a flowchart for explaining the operation of the server computer 8. The collection unit 80 of the server computer 8 collects measurement data from the control device 3 through the control system GW5 (step S100 in FIG. 3). The collection unit 80 stores the collected measurement data in the storage unit 81 of the server computer 8 (step S101 in FIG. 3).

  Further, when an event occurs in the control device 3 (YES in step S102 in FIG. 3), the collection unit 80 receives event information representing the content of this event from the control device 3 and stores it in the storage unit 82 of the server computer 8. (Step S103 in FIG. 3). Examples of events include, for example, an alarm indicating that the measurement data value has reached a predetermined upper and lower limit value, an alarm indicating that a failure has occurred in the control system, and a deviation between the measurement data value and the target value is a predetermined value. An alarm indicating that the upper and lower limit values have been reached, a system status for reporting the status of the control system, an operation of the control man-machine device 7 with respect to the control device 3 (for example, changing a target value, etc.), maintenance and inspection of the control system There is. The event information includes event occurrence date / time information, event end date / time information, and information representing the contents of the event.

  When there is a data request from the trend graph display device 10 as described later (YES in step S104 in FIG. 3), the search unit 83 of the server computer 8 stores the measurement data that matches the data request in the storage unit 81. Search is performed from the measured data (step S105 in FIG. 3). Further, the search unit 83 searches for event information related to the searched measurement data from the event information stored in the storage unit 82 (step S106 in FIG. 3).

  The transmission unit 84 of the server computer 8 transmits the measurement data and event information searched by the search unit 83 to the trend graph display device 10 via the host system network 6 (step S107 in FIG. 3).

  The server computer 8 repeats the processing of steps S100 to S107 as described above until the operation of the control system ends (YES in step S108 in FIG. 3).

  Next, the operation of the trend graph display device 10 will be described with reference to FIG. The operation receiving unit 100 of the trend graph display device 10 receives an operation from an operator who uses the trend graph display device 10 via an input device (not shown) such as a mouse or a keyboard.

  When the operation accepting unit 100 receives a trend graph display request from the operator (YES in step S200 in FIG. 4), the data request unit 101 of the trend graph display device 10 sends measurement data corresponding to the display request to the server computer 8. (Step S201 in FIG. 4). The request information sent by the data request unit 101 includes information specifying the type of measurement data requested by the operator to display the trend graph, the display target period (measurement date and time) of the measurement data, and the like.

The operation of the server computer 8 in response to the data request from the data request unit 101 is as described in steps S104 to S107 in FIG.
The data request unit 101 stores the measurement data transmitted from the server computer 8 in response to its own request in the storage unit 102 of the trend graph display device 10 (step S202 in FIG. 4). Further, the data request unit 101 stores the event information transmitted from the server computer 8 in the storage unit 103 of the trend graph display device 10 (step S203 in FIG. 4).

  Next, the display data creation unit 104 of the trend graph display device 10 creates display data of a trend graph (line graph) that visualizes the transition of the measurement data stored in the storage unit 102 for each type of measurement data ( FIG. 4 step S204). At this time, the display data creation unit 104 interpolates the measurement data discrete on the time axis to connect the measurement data with a straight line or a curve. Examples of the interpolation processing include linear interpolation and spline interpolation.

The display data creation unit 104 uses the value of the measurement data on the vertical axis of the trend graph and the time on the horizontal axis. At this time, the display data creation unit 104 automatically determines the scale range and scale interval on the vertical axis for each type of measurement data based on the minimum and maximum values of the measurement data, and is common to all measurement data. The scale range and the scale interval on the horizontal axis may be automatically determined based on the minimum value and the maximum value in all measurement data. Further, the display data creation unit 104 may determine the scale range and the scale interval on the vertical axis and the horizontal axis in accordance with designation from the operator.
When the operator requests a trend graph display of a plurality of types of measurement data, the display data creation unit 104 performs the above processing for each type of measurement data.

  Subsequently, the event determination unit 105 of the trend graph display device 10 refers to the event information stored in the storage unit 103, and whether there is alarm information in the event information corresponding to the measurement data displayed in the trend graph. It is determined whether or not (step S205 in FIG. 4).

  The display format determination unit 106 of the trend graph display device 10 sets the color of the display data so that the display color of the trend graph is different for each type of measurement data (step S206 in FIG. 4). The display color may be automatically determined according to a predetermined color arrangement rule, or may be determined according to an instruction from the operator.

  In addition, when it is determined that there is alarm information corresponding to the measurement data to be displayed on the trend graph (YES in step S205), the display format determination unit 106 performs the color setting of the display data described in step S206 and Based on the alarm information corresponding to the measured data, the display data display format is set so that the trend graph in the period in which the alarm is generated becomes the display format indicating the occurrence of the alarm (step S207 in FIG. 4). Since the alarm information (event information) includes at least one of the alarm occurrence date and time information and the alarm end date and time information, the display format determination unit 106 can specify the alarm occurrence period.

  As an example of a display format indicating the occurrence of an alarm, there is a flashing display of a trend graph line during a period in which an alarm is occurring. Further, importance level information for each type of alarm is registered in the display format determination unit 106 in advance. The display format determination unit 106 determines the importance of the generated alarm based on the alarm information corresponding to the measurement data and the information on the importance for each alarm type registered in the display format determination unit 106 in advance. You may make it change the blink color of the line of a trend graph according to importance.

  A driver (not shown) in the display unit 107 that has received display data for which display color setting and display format setting have been performed by the display format determination unit 106 drives a display device such as a liquid crystal panel based on the display data. Thus, information on the contents corresponding to the display data is displayed on the screen of the display unit 107 (step S208 in FIG. 4).

  FIG. 5 is a diagram showing an example of the trend graph display of the present embodiment. In the example of FIG. 5, the trend graph G is displayed in blue, for example, on the screen 1070 of the display unit 107. In FIG. 5, in order to make the difference in display format easy to understand, the entire trend graph G is represented by a solid line, and the line of the trend graph G during the period A during which an alarm corresponding to measurement data is generated is represented by a dotted line. As described above, the blinking color is changed according to the importance of the alarm that has occurred, the trend graph line is blinked in red for the most important alarm, and the alarm is blinked in yellow for the less important alarm.

  In this embodiment, an example of blinking display has been described as a display format indicating the occurrence of an alarm. However, the display format determination unit 106 indicates that the display color of the trend graph line in the alarm occurrence period does not generate an alarm. The display data may be set so as to be different from the display color of the trend graph line in the period. Even in this case, the display color of the trend graph line during the alarm generation period may be changed according to the importance of the alarm.

  Note that, when alarms having different importance levels are generated at the same time, the display format determination unit 106 selects a display format (blinking color or display color) according to the alarm having the highest importance level among the simultaneously occurring alarms. Just decide.

  In this embodiment, alarm information can be displayed in accordance with an instruction from the operator. The alarm information output unit 108 of the trend graph display device 10 performs an operation for requesting display of alarm information (for example, an operation of double-clicking a blinking portion of a line of the trend graph with a mouse) (in step S209 in FIG. 4). YES), alarm information corresponding to the measurement data displayed in the trend graph is acquired from the storage unit 103, and the display data is changed so that the contents of the acquired alarm information are displayed in time series on the trend graph display screen. (Step S210 in FIG. 4).

  The operation of the display unit 107 that has received the display data changed by the alarm information output unit 108 is the same as in step S208. Thus, the display is switched, and alarm information is displayed together with the trend graph (step S211 in FIG. 4).

  FIG. 6 is a diagram showing an example of the trend graph display after the alarm information display request operation is performed. In the example of FIG. 6, the alarm information is displayed at the upper right portion of the screen 1070 as a result of the operator double-clicking the portion of the period A where the trend graph G is blinking. According to this alarm information, it can be seen that an alarm that causes the measured value (PV) to reach the upper limit occurs at a monitoring point of “AI0001” at 12:20, and that the alarm is released at 12:30.

  In this embodiment, event information can also be displayed in accordance with an operator instruction. The event information output unit 109 of the trend graph display device 10 performs an operation for requesting display of event information (for example, an operation of double-clicking a non-flashing portion of a line of the trend graph with a mouse) (FIG. 4). In step S212, YES), all event information (including alarm information) corresponding to the measurement data displayed in the trend graph is acquired from the storage unit 103, and the content of the acquired event information is displayed on the trend graph display screen. The display data is changed so as to be displayed in the series (step S213 in FIG. 4).

  The operation of the display unit 107 that has received the display data changed by the event information output unit 109 is the same as that in step S208. In this way, the display is switched, and event information is displayed together with the trend graph (step S214 in FIG. 4).

  FIG. 7 is a diagram showing an example of trend graph display after an event information display request operation is performed. In the example of FIG. 7, as a result of the operator double-clicking a non-flashing portion of the trend graph G, event information is displayed at the upper right portion of the screen 1070. According to this event information, it can be seen that the measurement value (PV) of the monitoring point “AI0001” changed from 6.0 to 5.0 at 12:30.

  The trend graph display device 10 repeatedly performs the processes in steps S200 to S214 as described above until the operation of the control system ends (YES in step S215 in FIG. 4).

  An operator who monitors the control system using the trend graph display device 10 is required to quickly and easily confirm the cause when an abnormality occurs. In this example, when it is determined that there is alarm information in the event information corresponding to the measurement data displayed in the trend graph, the trend graph for the alarm occurrence period is in the display format indicating the alarm occurrence. The operator can intuitively associate the trend graph with the alarm information. In recent years, a new specification OPC UA (OPC Unified Architecture) defined by the OPC Foundation is spreading. In the OPC UA, one object includes a history of continuous data and a history of alarm / event, and the continuous data and alarm / event data are integrated. With such an infrastructure in place, an environment in which a linkage function between continuous data and alarm / event data can be easily provided is being prepared.

  In this embodiment, when the alarm information display is requested by the operator, the alarm information corresponding to the measurement data displayed in the trend graph is displayed on the trend graph display screen. The details of the alarm can be confirmed. In the present embodiment, when the display of the event information is requested by the operator, the event information corresponding to the measurement data displayed in the trend graph is displayed on the trend graph display screen. Details of related events can be confirmed.

  Each of the server computer 8 and the trend graph display device 10 of the present embodiment is realized by a computer having a CPU (Central Processing Unit), a storage device, and an external interface, and a program for controlling these hardware resources. Can do. The CPU of each device executes the processing described in the present embodiment in accordance with a program stored in the storage device.

  The present invention can be applied to a technique for displaying measurement data in a graph.

  DESCRIPTION OF SYMBOLS 1 ... Flow meter, 2 ... Pressure gauge, 3 ... Control apparatus, 4 ... Control system network, 5 ... Control system gateway, 6 ... Host system network, 7 ... Control man-machine apparatus, 8 ... Server computer, 10 ... Trend graph display 80, collecting unit, 81, 82 ... storage unit, 83 ... searching unit, 84 ... transmitting unit, 100 ... operation receiving unit, 101 ... data requesting unit, 102, 103 ... storage unit, 104 ... display data creating unit, 105 ... event determination unit, 106 ... display format determination unit, 107 ... display unit, 108 ... alarm information output unit, 109 ... event information output unit.

Claims (6)

A first storage unit configured to store measurement data;
A second storage unit configured to store event information related to the measurement data;
A display data creation unit configured to create display data of a trend graph visualizing the transition of the measurement data for each type of measurement data;
Event determination configured to refer to event information stored in the second storage unit and determine whether alarm information is present in event information corresponding to measurement data displayed on the trend graph And
A display format configured to set the display data so that the trend graph in the alarm occurrence period becomes a display format indicating the occurrence of an alarm based on the alarm information when it is determined that the alarm information exists A decision unit;
A trend graph display device comprising: a display unit configured to display a trend graph according to display data for which the display format is set. The trend graph display device according to claim 1,
The trend graph display device characterized in that the display format indicating the occurrence of an alarm is a format in which a line of the trend graph in an alarm occurrence period is blinked. The trend graph display device according to claim 1,
The display format indicating the occurrence of the alarm is a display format in which the display color of the line of the trend graph during the alarm occurrence period is different from the display color of the line of the trend graph during the period when the alarm is not generated. A characteristic trend graph display device. In the trend graph display device according to any one of claims 1 to 3,
The display format determining unit determines a display format indicating the occurrence of the alarm according to the importance of the alarm that has occurred. In the trend graph display device according to any one of claims 1 to 4,
The display data is changed so that alarm information corresponding to the measurement data displayed on the trend graph is displayed on the trend graph display screen when an alarm information display is requested by an operator. A trend graph display device further comprising an alarm information output unit. In the trend graph display device according to any one of claims 1 to 5,
The display data is changed so that event information corresponding to the measurement data displayed on the trend graph is displayed on the display screen of the trend graph when display of event information is requested by an operator. A trend graph display device further comprising an event information output unit.

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